Using the Sine Formula, prove that.

Miki150

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Oct 28, 2012
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I got stuck while doing this question thanks for any help.

Using the Sine Formula, prove that:

i) a sin B = b sin A
This is fairly easy. sin A/a = sin B/b
Cross multiply ends up with a sin B = b sin A

ii) a(sin B - sin C) + b(sin C - sin A) + c(sin A - sin B) = 0
I'm completely stuck with this part.
Thank you.
 
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